Autocar Glass Plate A7786
Austin, could it read "Villiers Birkin Special" on the bonnet of no 8? If so, then this is Amherst Villiers driving the car created from the single-seater AC raced for a while rather unhappily by Raymond Mays. No 11 is "R Wilson" in the 200-Miles Race Talbot-Darracq.
I think you could be right, added a close up.